# TensorZero

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/tensorzero

- Industry: Software
- Headquarters: Brooklyn, US
- Website: www.tensorzero.com
- Total disclosed funding: $7.3M
- Latest round: Seed (Aug 18, 2025)
- Investors on record: 5

## About

Based in the US, TensorZero specializes in providing open-source infrastructure for large language model (LLM) applications, enabling organizations to optimize and enhance their operations across various sectors.Founded in 2024 and headquartered in Brooklyn, US, TensorZero focuses on developing advanced infrastructure for LLM applications. In its early stages, the company pivoted towards creating a versatile stack that integrates with multiple LLM providers through a unified API. TensorZero has successfully completed 1 deal, with its most recent deal occurring on August 18, 2025, during which it raised USD 7.3 mn in a Seed round led by FirstMark Capital, with participation from Bessemer Venture Partners, Bedrock Capital, DRW Venture Capital, and Coalition Capital. TensorZero offers an advanced open-source infrastructure designed for industrial-grade large language model (LLM) applications. The core product is a versatile stack that integrates with various LLM providers through a unified API, allowing users to access hundreds of models with minimal latency. Key features include observability tools for monitoring LLM systems, optimization capabilities for prompts and models, and built-in experimentation tools such as A/B testing. This suite is primarily targeted at organizations that require robust LLM solutions for applications in sectors like finance, technology, and healthcare, enabling them to enhance operational efficiencies and drive innovation. TensorZero is designed to be self-hosted and is accessible globally, catering to users in North America, Europe, and Asia.TensorZero operates on a unique revenue model characterized by its commitment to being fully open-source, which eliminates traditional direct revenue streams from product sales or subscriptions. The company provides its services free of charge, allowing clients to adopt its software without incurring costs. Instead, revenue generation may derive from support services, partnerships, and potential enterprise-level collaborations that enhance user experience and application performance. Clients, primarily B2B entities, leverage TensorZero's technology to implement LLM solutions in their operations, potentially leading to cost savings in model deployment and maintenance. The structure of transactions typically involves direct engagement with clients for support and customization, ensuring tailored solutions that meet specific business needs.In August 2025, TensorZero raised USD 7.3 mn in Seed funding led by FirstMark Capital, with participation from Bessemer Venture Partners, Bedrock Capital, DRW Venture Capital, and Coalition Capital. The company will utilize this funding to support the further development of its open-source infrastructure. TensorZero plans to expand its offerings with new products aimed at enhancing integration capabilities and user experience, although specific release dates are not outlined. Geographically, TensorZero is targeting expansion into additional markets throughout Europe and Asia by 2026.

## Funding rounds

- Seed, Aug 18, 2025, $7.3M — Bessemer Venture Partners, FirstMark Capital, DRW Venture Capital, Bedrock, Coalition Capital

## Investors

- Bessemer Venture Partners (https://capitalatlas.ai/funds/bessemer-venture-partners) — Seed
- FirstMark Capital (https://capitalatlas.ai/funds/firstmark-capital) — Seed
- DRW Venture Capital (https://capitalatlas.ai/funds/drw-venture-capital) — Seed
- Bedrock (https://capitalatlas.ai/funds/bedrock) — Seed
- Coalition Capital (https://capitalatlas.ai/funds/coalition-capital) — Seed